Combination dish washer and sterilizer.



No. 831,084. PATENTED SEPT. 18, 1906. P. R. LISA. COMBINATION DISH WASHER AND STERILIZER APPLICATION FILED OCT. 16. 1905.

2 SHEETS-SHEET l.

Ti as No. 831,084. PATENTED SEPT. 18, 1906. P. R. LISA.

COMBINATION DISH WASHER AND STERILIZER.

APPLIGATION FILED OGT.16. 1905.

2 SHEETS-SHEET 2.

PAUL RUBEO'LISA, OF NEWARK, NEW JERSEY.

COMBINATION DISH WASHER AND STERILIZER.

Specification of Letters Patent.

Patented Sept. 18, 1906.

Application filed October 16, 1905. Serial No. 282,915.

To all whom it may concern.-

Be it known that I, PAUL RUBEO LISA, a subject of the King of Italy, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in a Combination Dish l/Vasher and Sterilizer, of which the following is a specification.

The present inventionpertains to an i1nprovement in dish-washers, and more particularly to a combination dish washer and sterilizer.

The object of my invention is to provide a dish-washer wherein a large number of dishes of various shape and sizes will be washe in a minimum space of time by fine jets of hot and cold water and through the medium of hot air conveyed into the apparatus from a cooking-stove will also be sterilized and dried in a mosteifective manner;

My invention is illustrated in the accompanying drawings, in which similar reference-letters denote corresponding parts, and in which Figure 1 is a sectional elevation of my ap paratus; Fig. 2, a top plan thereof, the cover being partly broken away to show the m ner parts; and Fig. 3 is an inclosed crosssection through the winding pipe and a longitudinal section through one of the nozzles having a perforated tip.

The dish-washer comprises a casing or receptacle a, which may be made of any suitable material, as sheet-iron or the like, and may assume various forms and proportions. The casing is provided with a cover I), hinged thereto and adapted to be hermetically closed. For this purpose I prefer to usea washer-ring c, of suitable material, as asbestos or the like, which I attach to the under surface of the cover or to the upper edge of the box. A little above the bottom of the receptacle a perforated'sieve-sha ed intermediate bottom d is arranged an .attached to the walls of the receptacle. This perforated bottom serves as a support for plates or like dishes. The free space e between the perforated bottom and the bottom of the receptacle serves to receive all extraneous matter from the dishes, which can be discharged from time to time through the discharge-pipe 7, provided with a cock g. I

Within the receptacle a and at some distance from the perforated bottom d a windwhile the other connnunicates with the pipe h, branched off an outer pipe 01, which is adapted to be connected with the hot and cold water supply pipes and which has a cutoil Projecting from the perforated bottom (I are, in the spaces between each two windings of the pipe g, transversal walls It, arranged adjacent to one of the windings and leaving a larger space between themselves and the opposite winding. These walls It serve as supports for the plates or similar dishes, which are placed in the said spaces with their backs leaning against said walls It. In addition to the back Walls there are in each space between the windings lateral supports Z,

formed by ribs'projecting longitudinally fromthe back walls k, or, as shown in the drawings, byshort partition-walls projecting upward from the intermediate bottom (Z. Both the back walls is and the partitionavalls, if the latter be adopted, are perforated or sieve-shaped, as the bottom d. The back walls It and the ribs or partitions 1 form compartments, each of which is adapted to receive a single dish in tilted position with its back leaning against the wall it and its inside exposed to the opposite winding of the tube 9. The latter is provided with nozzles m, projecting laterally from each of the winds in'gs to face the front and back of the dishes distributed in the a paratus in the aforesaid manner. arranged at such alevel that it will lie approximately in the middle of the dishes. The nozzles m are of a conical shape and have perforated tips. The perforations are made as small as possible to allow very fine streams of high pressure striking the inside and outside of the dishes, whereby all foreign matter will be removed from the latter.

Apart from the arrangement described for a washing plates or similar dishes, the receptacle may be provided With-one or more subdivisions or compartments for other dishes, as cups, glasses, or the like. In the drawings I have shown one more compartment for such other dishes. This second compartment is formed by a perforated flange or support a, projecting inward from the walls of the The win ing tubeg is preferably casing a all around the inner Circumference of the latter. The width of the said support 12. is sufficient to accommodate one or more 'rows of dishes. Between theeedges of the said perforated support n a free space is formed to allow access to the lower compartment holding the plates. To secure the cups, glasses, or l1ke dishes in proper positlon,

I arrange and attach rece tacles 0 upon the support n, which I form 0 wire-nettin per-' forated sheet-iron, or any other suitab e mation as the nozzles m. The nozzles g of the upper pipe 19 project from the lower surface thereof toward the interior of the dishes, and

the nozzles q of the lower pipe p project from the upper surface thereof toward the exte- 8 forms an antechamber for. hot air admitted DiOI' of the dishes.

The pipes p are at one end similarly to the pipe drought in communication by branch pipes r r with the exterior pipe/i.

The sterilizing apparatus comprises a tightly-closed casing 8, formed at the outside of the receptacle (1 and attached to the walls thereof. The part of the wall of the receptacle a which is mclosedat the outside by the casing s is cut out and the opening is covered by a piece 8 of porous material. The casing into it through-a pipe t, having a cut-off cock t and being adapted to be connected in a suitable'manner with the cooking-stove or.

any other heat source. The casing 8, form- .ing the antechamber for the hot air may be omitted and the pi e t directly aflixe'd to the wall of the casing to terminate in the .opening thereof in front of the porous partition 8.

The object of .the porous partitions is to retain soot, dust, and other foreign substances contained in hot air coming from the stove and permit only purified air to enter the receptacle (1.

. Attached to one of the Walls of the receptacle a may be a glass Water-gage u to show the level of the water contained in the receptacle.

The mode of operation of the apparatus is as follows: When the dishes are properly distributed in the receptacle a and the cover I) tightly closed, the cock is opened, permitting simultaneously or alternately hot or cold water to flow through the pipes g, p, and p, from which it will in fine ets strikethe dishes inside and outside. The perforated partitions is Z, and the perforated or wire-netting casings will permit the streams of water to wash the dishes at the outside. After the washing is finished the cocks are cut off and the water allowed to flow ofi through dishot-air pipe t is opened, and hot air-admitted into the receptacle, which will not only rapidly dry the dishes, but by reason of the high degree'of heat also thoroughly sterilize them.

As stated in the beginning, the receptacle (1, the perforated supports d n, partitions k Z,

charge-pipe f and cocky, the cock t of the 65 and casings 0 may be made of any suitable material. I prefer, however, to use herefor galvamzed sheet-non.

I do not restrict myself to the construction specified and shown, as various changes may be madein the different parts of the apparatus without departing from the principle'of my invention.

What I claim, and desire to secure by Letters Patent, is-

1; A combination dish washer and sterilizer comprising a receptacle havin a cover to between the windings being adapted to receive plates or like dishes which will rest in a tilted osition upon the perforated support, conical nozzles laterally projecting from the windings of the pipe toward the lnside and outside of the plates said nozzles having finespray tips, means for holding the plates in proper position, a hot-air casing attached to the main receptacle, hot-air-supply pipe terminating in said casing, said casing having an opening leading into the receptacle and a porous partition covering said opening, substantially and for the urpose as.'spec1fied.

2. A combination ish washer and sterilizer comprising a receptacle having a cover to be hermetically closed, a perforated intermediate bottom or support above the bottom of the receptacle, a winding pipe arranged horizontally above said perforated support, the spaces between the windings of the pipe being adapted to receive the plates, conical nozzles pro ecting from the windings toward the inside and outside of the plates, a second perfo-. rated su port extending above thewinding pipe an around'the inner circumference of the receptacle, leaving a freespace between its inner edges to allow an access to the winding pipe, plpes runnin parallel and above and below said secon support, the upper pipe having conical nozzles with spray-tips projecting downward and the lower pipe having similar nozzles projecting'upward, the

said second support being adapted to hold cups, glasses or slmilar dishes, means to secure the said dishes in proper position upon the support, all pipes of the receptacle being in communicationwith an external pipe adapted to be connected with the hot and In testimony whereof I affix my signature cold wlatfir supply, a hot-air s11 p113? itlhehre inpresence of two witnesses. ceptac e avin an 0 ening iniw 10 t e otair supply terl inate and a porous partition PAUL RUBEO LISA 5 coverlng said opening, and a glass water-gage, Witnesses:

substantially and for the purpose as speci- MAX D. ORDMANN, fied. JOHN T.-CARMODY. 

